Altronix AL125ULX Installation Instructions

AL125UL • AL125ULX • AL125ULP • AL125ULE
Access Control Power Supply/Chargers

v. 050803

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Overview:

AL125UL, AL125ULX, AL125ULP, AL125ULE are Power Limited Power Supply/Chargers that will convert 115VAC
50/60Hz input, into two individually PTC protected 12VDC or 24VDC outputs (see specifications). They are intended
for use in applications requiring UL Listing for Access Control (UL294) and applications requiring an interface with Fire
Alarm Control Panels.

Specifications

Agency Listings:

• UL Listed for Access Control Systems (UL294).
CUL Listed - CSA Standard C22.2 No.205-M1983,
Signal Equipment.

• MEA - NYC Department of Buildings Approved.

• NFPA 101 (Life Safety).

Input:

• AL125UL, AL125ULX - 115VAC 50/60 Hz, .6 amp.

• AL125ULP, AL125ULE - 24VAC @ 40VA.

Output:

• Two (2) 12VDC or 24VDC, class 2 rated
power limited outputs.

• 1 amp total supply current @ 12VDC or 24VDC
(AL125UL & AL125ULX).

• 1 amp total supply current @ 12VDC, .5 amp total
supply current @ 24VDC (AL125ULP & AL125ULE).

• Filtered and electronically regulated output.

Battery Backup:

• Built-in charger for sealed lead acid or
gel type batteries.

• Maximum charge current: 400mA.

*Note: When unit is powered by battery back up (AC Fail condition) the voltage range is 9.3V-13.2V and

19.55V-26.4V for 12 and 24 volt operation respectively.

*

Battery Backup (cont’d):

• Automatic switch over to stand-by battery when AC fails.

Special Features:

• AC power and unit status indicator on the front panel.

• Normally Open [NO] trigger input.

• Supervised Fire Alarm Disconnect (Latching w/reset
or Non-Latching).

Configurations:

• AL125UL - includes power supply, transformer
cam lock and enclosure (8.5”H x 7.5”W x 3.5”D).
Accommodates one (1) 12VDC/4AH battery.

• AL125ULP - includes power supply, plug-in transformer
(24VAC/40VA) cam lock and enclosure
(8.5”H x 7.5”W x 3.5”D). Accomodates one (1)
12VDC/7AH battery or two (2) 12VDC/4AH batteries.

• AL125ULE - includes power supply, cam lock
and enclosure (8.5”H x 7.5”W x 3.5”D).
Accommodates up to two (2) 12VDC/4AH batteries.

• AL125ULX - includes power supply, transformer,
cam lock and enclosure (13”H x 13.5”W x 3.25”D).
Accommodates up to two (2) 12VDC/7AH batteries.

Power Supply Output Specifications: (AL125UL, AL125ULX)

Output VDC Switch Position Max. Stand-by Load DC Max. Alarm Load DC Battery (optional)

12VDC SW2 Open 1 amp 1 amp 12VDC

24VDC SW2 Closed 1 amp 1 amp 24VDC

Power Supply Output Specifications: (AL125ULP, AL125ULE)

Output VDC Switch Position Max. Stand-by Load DC Max. Alarm Load DC Battery (optional)

12VDC SW2 Open 1 amp 1 amp 12VDC

24VDC SW2 Closed .5 amp .5 amp 24VDC

Stand-by Specifications:

Output 4 hr. of Stand-by & Output 4 hr. of Stand-by &

5 Minutes of Alarm 5 Minutes of Alarm

12VDC / 4AH Battery .5 amp / 1 amp 12VDC / 7 AH Battery 1 amp / 1 amp

24VDC / 4 AH Batter

y

.5 amp / 1 amp

24VDC / 7

AH Batter

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1 amp / 1 amp

Installation Instructions:

The units should be installed in accordance with ar
applicable Local Codes.

ticle 760 of

- 1 -

The National Electrical Code and NFP

A 72 as w

ell as all

See Terminal Identification Chart on page 2 for a description of each terminal function.

1.

Install Power Supply Board into enclosure (Fig. 1 - Board Installation Diagram, pg. 3)

.

2. Mount the unit in desired location.

3. Power connections:
AL125UL, AL125ULX - Connect secondary (blue and yellow leads) from the transformer to the Power Supply

a.

Board terminals marked [XFMR]

(Fig. 1 - Board Installation Diagram, pg. 3). Connect 115VAC 50/60Hz to the
black and white flying leads of the transformer. Secure green wire lead to earth ground. Use 18 AWG or larger for
all power connections (Battery, AC input, DC outputs). Use 22 AWG to 18 AWG for power limited circuits
(Trigger inputs, Dry outputs, DC outputs).
AL125ULP, AL125ULE - Connect 24VAC from UL Listed 40VA plug-in transformer (included with AL125ULP)

b.

to terminals marked [XFMR].

Keep power limited wiring separate from non-power limited wiring

(115VAC 50/60Hz Input, Battery Wires). Minimum .25” spacing must be provided.

4. Measure output voltage before connecting devices. This helps avoid potential damage.

5. Set the desired DC output voltage by setting switch SW2 to the appropriate position

(Power Supply Output Specifications Table, pg. 1).

6. Connect Fail-Safe locking devices to the terminals marked [COM-- and LOCK+]. Connect Fail-Secure locking
devices to the terminals marked [COM-- and STRIKE+] (

Connect normally open access control device (i.e. cardreader, request to exit device, access control system) to the

7.

terminals marked TRG INPUT [NO, GND] (
Connect FACP interface to the terminals marked [FACP1 and FACP2]. Wire the 2.2K resistor (supplied) in series

8.

Fig. 2 - Application Diagram, pg. 3).

for a normally closed input or in parallel for a normally open input (
required, set the latching FACP interface mode by closing SW1

Fig. 2 - Application Diagram, pg. 3).

Fig. 2 - Application Diagram, pg. 3). If

(Fig. 2A - Application Diagram, pg. 3), and connect

a normally open reset device to the terminals marked RESET [NO, GND].

9. Connect battery to terminals marked [+ BAT -- ] (battery leads included). Use two (2) 12VDC batteries connected

in series for 24VDC operation.
Note: For Access Control applications, batteries are optional. When batteries are not used a loss of AC will result in the
loss of output voltage. When the use of stand-by batteries are desired, they must be lead acid or gel type.

10. Please insure that the cover is secured with the provided cam lock.

Maintenance:

Unit should be tested at least once a year for the proper operation as follows:
Output Voltage Test: Under normal load conditions, the DC output voltage should be checked for proper voltage level

(Power Supply Output Specifications Table, pg. 1).

Battery Test: Under normal load conditions check that the battery is fully charged, check specified voltage both
at battery terminal and at the board terminals marked [- BAT +] to insure there is no break in the battery
connection wires.

Note: Maximum charging current under discharge is 400mA.
Note: Expected batter

y life is 5 y

ears, however it is recommended changing batteries in 4 years or less if needed.

Terminal Identification:

Terminal Legend Function/Description

oltage transformer connections.

w v

XFMR

+ AUX -- Aux power output terminals. These terminals will supply 12VDC or 24VDC,

LOCK + Switched power output. Fail-Safe [LOCK+] supplies positive power when unit is not triggered
STRIKE + and FACP interface is inactive. Fail-Secure [STRIKE+] supplies positive power when unit

--

COM

FACP1 Supervised by 2.2K end of line resistor FACP interface. Short or open will cause power to be
FACP2 dropped to terminal marked [LOCK+] and supply power to terminal marked [STRIKE+].

TRG INPUT
NO, GND [LOCK+] and supplied to terminal marked [STRIKE+].

RESET Momentary short between these terminals would end latching FACP interface condition
NO, GND Feature active only if latching FACP is selected (SW1 closed).

-- BAT +

Lo

fected by trigger, reset or fire alarm interface.

not af

is triggered and/or f

ire alar

m interf

Condition can be maintained e

ace is activated. [COM--] supplies negative power.

en after restoration of the circuit (latching mode).

v

Short between these two terminals will cause power to be dropped to terminal marked

Stand-b

y batter

y connections.

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